Sr System Relay; T Timer - Panasonic FP7 Series Command Reference Manual

2.5.4 SR System relay

■
How system relay (SR) works
● A system relay turns ON or OFF under specific conditions.
● Its ON or OFF state is not externally output. It only operates within a program.
■
Types of system relays (SR)
Classification
Operation status
flag
Error flag
Relay that turns
ON or OFF under
specific
conditions

2.5.5 T Timer

■
How timer (T) works
● When a timer is activated and the set time elapses, the timer contact with the same number
as the timer turns ON.
● When the timer is in the time-up state and the timer execution condition turns OFF, the timer
contact turns OFF. All timers are non-hold type.
Tn
Timer contact: ON
■
Usage restrictions
● When used as contacts, there are no restrictions on the number of times that can be used.
WUME-FP7CPUPGR-12
Function
Operation status is indicated by
ON or OFF.
Turns ON when an error occurs
and indicates abnormalities.
Can be used with the desired
conditions in the program.
TMX n
2.5 Explanations about Relays
Example
Under operation (RUN) (SR20), under forced input/output
(SR29), results of comparison instruction (SRA to SRC)
Operation error (SR7, SR8)
Normally ON relay (SR10), ON/OFF for each scan (SR12)
Initial pulse relay (SR13 to SR14), clock pulse (SR18 to
SR1E)
Timer no.
Time up
U0
Tn：ON
n: Timer no.
2-19